Direct Calculation Method of Reference Flux Linkage for Maximum Torque per Ampere Control in DTC-Based IPMSM Drives

This paper proposes a maximum torque per ampere control strategy for direct-torque-controlled interior permanent magnet synchronous motor drives. The proposed method is based on the solutions of a quartic equation, a motor model in the d-q rotating frame often used for the synchronous motor controll...

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Bibliographic Details
Published in:IEEE transactions on power electronics 2017-03, Vol.32 (3), p.2114-2122
Main Authors: Shinohara, Atsushi, Inoue, Yukinori, Morimoto, Shigeo, Sanada, Masayuki
Format: Article
Language:English
Subjects:
Axes (reference lines)
Computer simulation
Couplings
Direct torque control (DTC)
Electric industries
Inductance
Lookup tables
Magnetism
Mathematical model
Mathematical models
maximum torque per ampere (MTPA)
Parameter estimation
Permanent magnet motors
Permanent magnets
Quartic equations
Stators
Synchronous motors
Torque
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Summary:This paper proposes a maximum torque per ampere control strategy for direct-torque-controlled interior permanent magnet synchronous motor drives. The proposed method is based on the solutions of a quartic equation, a motor model in the d-q rotating frame often used for the synchronous motor controllers, and a well-known equation for maximum torque per ampere control. Therefore, the proposed method does not use a lookup table that depends on parameters of the motor and that has to be created in advance. In addition, the proposed method can use the estimated parameters. Particularly, the variations of the d- and q-axes inductances can be estimated when the inductances are modeled as the functions of the d- and q-axes current. The simulation results validate that the proposed method can achieve the maximum torque per ampere control. In addition, the simulation and experimental results verify the accuracy improvement of the maximum torque per ampere control with the iterated calculation.
ISSN:0885-8993
1941-0107
DOI:10.1109/TPEL.2016.2569140